Components in them may die like with any electronics, but the lamps should last as long as you :^) They are a lot more reliable and accurate than the small newer Rb standards for sure. I am sure mine will outlive me. Dan

I'll likely get a heavy die cast box for my thunderbolt at some point.

Many of them also have PLLs on the die that are intended for clock generation but can often be abused for other purposes :)

I really don't > understand what's happening here as the receiver is on the roof and sees > plenty of satellites: Even if there were zero satellites the GPS receiver should report zero, not just stop and die. Are you certain that both PPS and NMEA data both stop? If just one of them, then I'd suspect a bad connection, a loose cable or something.

Hi Looking at the picture of the die, I suspect their radio has a VCO on it that they lock up through a (noisy) low frequency PLL. That would mean they really don't care a lot about phase noise of the reference.

. > Heck, for my application it could be as simple as QBASIC REM Open serial port OPEN #1, "COM1:" REM Read next three messages FOR I=1, 3 LINE INPUT #1, A$ B$ = B$+A$ NEXT I REM Close Serial port CLOSE #1 REM Look for $GPRMC message and parse k = INSTR(B$, "GPRMC") if k = 0 then die a miserable death with an error message else finish parsing.. end

While the "instruction rate" might vary with the needs of the moment and die temperature, there's usually some clock and corresponding counter that runs at a relatively constant rate so the CPU knows what time it is. That said, a 10 ppm (or even 50 ppm) oscillator in a PC would be "high performance" My macbook air shows 56.652 in ntp.drift

I'd try swapping in a new set just to be sure one didn't die. Otherwise, you've probably got some difficult diagnosing to do. Can you get anything over the RS-232 link? -- Bill Ezell ---- They said 'Windows or better' so I used Linux.

Menhaden (bunker) sometimes die off in hot weather. On Fri, Jul 10, 2020 at 2:10 PM Richardson, Valerie via CTBirds < ctbirds@lists.ctbirding.org> wrote: > I live on the Quinnipiac, and I'm seeing dead fish floating up-river with > the incoming tide--about a half dozen so far, spaced out about five minutes > apart.

Up to 1 billion birds die each year as a result of collisions with glass in the U.S. Meredith Barges and Viveca Morris — New Haven activists and co-authors of “Building Safer Cities for Birds” — will discuss the new field of bird-safe building and the consequences of window strikes for bird populations. Thursday, January 18, 7 pm.